Ambipolar copolymer of dithienocoronenedi-imide and benzo(bis)thiadiazole with balanced hole and electron mobility

Tuning of the Electronic Levels of Oligothiophene–Naphthalimide Assemblies by Chemical Modification

“…In the search for low‐bandgap materials in which facile electron and hole injection are both possible from a single type of electrode, we have synthesized and characterized different oligothiophene–naphthalimide assemblies (Figure ) in which both donor and acceptor moieties are directly conjugated through rigid linkers.…”

“…[11][12][13][14][15][16][17] Functionalization of these rylene materials with electron donor groups,s uch as oligothiophenes, [18][19][20] or extension of the pconjugated system has allowed ambipolar charget ransport. [21][22][23][24][25][26][27][28] In the search for low-bandgap materials in which facile electron and hole injection are both possiblef rom as inglet ype of electrode, [20,21,[29][30][31][32][33][34] we have synthesized and characterized different oligothiophene-naphthalimide assemblies ( Figure 1) in which both donora nd acceptorm oieties are directly conjugated through rigid linkers.…”

“…In addition, they have excellent thermal and oxidative stability, high electron affinities, and, in most cases, high electron mobilities . Functionalization of these rylene materials with electron donor groups, such as oligothiophenes, or extension of the π‐conjugated system has allowed ambipolar charge transport …”

Benzothiadiazole‐Based Small‐Molecule Semiconductors for Organic Thin‐Film Transistors and Complementary‐like Inverters

“…[6] For instance, Zhang et al reported new solution-processable molecules based on benzothiadiazole and dithienocoronene diimide units and showed ambipolar device characteristics with well-balanced hole and electron mobilities of 0.018 and 0.019 cm 2 V À1 s À1 ,r espectively. [7] In addition, Chen et al synthesized as olution-processable benzothiadiazole-based small molecule with ah ole mobility of 0.016 cm 2 V À1 s À1 ,a nd showed its application in solar cells with powerc onversion efficiency (PCE) of 1.01 %. [8] Moreover,Z hang et al synthesized as olution-processable benzothiadiazolebased small molecule with ambipolar transport characteristics and well-balanced hole and electron mobilities of 0.01 cm 2 V À1 s À1 ,a nd showedi ts application in organic inverter circuits with ag ain of 25.…”

Hole‐mobility limits for the Zn(OC)2 organic semiconductor obtained by SCLC and field‐effect measurements

“…Compared to inorganic semiconductors, organic semiconductors allow to develop flexible, large area, and low cost devices such as flexible electronic circuits , sensors , light emitting diodes , thin film transistors , and solar cells , thanks to the generally low processing temperatures, needed for the classical deposition techniques, such as spin‐coating, master blading, spray‐coating, etc. In order to obtain good performances of the electronic devices based on organic semiconductors, the charge carrier transport in the bulk material and the injection or extraction processes of charges at the interface between the metal electrode and the active layer play a key role . In disordered organic materials, the charge transport depends on the pathways that are available for carriers to organize a macroscopic electric current .…”